LM2771 Datasheet (National Semiconductor) - Low-Ripple 250mA Switched Capacitor Step-Down DC/DC Converter

LM2771, Low-Ripple 250mA Switched Capacitor Step-Down DC/DC Converter

The LM2771 is a switched capacitor step-down regulator that produces a 1.5V output without the use of an inductor.

It is capable of supplying loads up to 250mA.

The LM2771 operates with an input voltage from 2.7V to 5.5V, and requires only 3 low-cost ceramic capacitors.

The LM2771 uses a regulated 0

LM2771 Features

* n n n n n n n n n n n n Low-Noise Fixed Frequency Operation 1.5V Output Voltage Li-Ion (3.6V) to 1.5V with 81% Efficiency 1.7% Output Voltage Accuracy Very Low Output Ripple: 8mV @ 250mA Output Currents up to 250mA 2.7V to 5.5V Input Range Shutdown Disconnects Load from VIN 1.1MHz Switching Frequenc